Be sure to put a layer of glass between the Ti (or any other metal parts) and the CF. if CF is in context with metal there is a galvanic reaction (small electrical current caused by dis similar metals) and things will corrode. CF. is not metallic but is conductive andchwmically behaves like a metal in this situation.

To avoid wrinkles on wrapped tubes a piece of heat shrink over the layup will compress things and then stuff the tube into the bag. Pull a waxed cloth through he HS so it helps release. If you want to the sun the CF run it long and tie the ends to a bit of patacord or old kite line. Pull it tight. This will expelll extra resin and tension the fibers helping them stay put and also stiffening the layup.

You will waste a bit of material but composite work is highly consumable which runs up costs. Committing to using s bit more materials tends to make better parts so there is value

Can somebody please clarify this "galvanic corrosion" idea that I hear over and over again? For any current to flow there has to be a potential, and what is the source of this potential? Is it coming out from nowhere, defying the law of conservation of energy?

Last edited by tegirinenashi on Mon Feb 12, 2018 8:52 pm, edited 2 times in total.

Can somebody please clarify this "galvanic corrosion" idea that I hear over and over again? For any current to flow there has to be a potential, and what is the source of this potential? Is it coming out from nowhere, defying the law of conservation of energy?

You probably use this every day as you oxidize the zinc in Alkaline batteries. In the composite example, carbon fiber conducts electricity along with attached metal pieces. Because carbon fiber is more noble than steel or aluminum, those metals are oxidized. Carbon fiber acts as a cathode where dissolved H+ and O2 are reduced. The chemical potential exists between dissolved oxygen, hydrogen ions, and the steel or aluminum anode.